PT - JOURNAL ARTICLE AU - van Schilfgaarde, Jan TI - Water futures DP - 1991 Jan 01 TA - Journal of Soil and Water Conservation PG - 17--19 VI - 46 IP - 1 4099 - http://www.jswconline.org/content/46/1/17.short 4100 - http://www.jswconline.org/content/46/1/17.full